Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"luan hoa dat snippets" » "luan hoan dat snippets", "luan khoa dat snippets", "luan hoat dat snippets", "luan hoa dan snippets", "luan hoa dai snippets", "luan hoc dat snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("luan hoa dat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("luan hoa dat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( luan hoa dat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("luan hoa dat snippets"))) or ("locating bug core snippets"))*.